计算器

while True:
    print("Do you want as(add and subtract) or md(multiply and divide)?")
    answerofask1 = input()
    if answerofask1 == 'as':
        print("Do you want add or subtract?")
        answerofask2 = input()
        if answerofask2 == 'add':
            print("Please write your addend")
            addend1 = float(input())
            print("Please write your addend")
            addend2 = float(input())
            answerofadd = addend1 + addend2
            print("The answer is :", addend1, "+", addend2, "= ", answerofadd)
        elif answerofask2 == 'subtract':
            print("please write your minuend")
            minuend = float(input())
            print("Please write your reduction")
            reduction = float(input())
            answerofsubtract = minuend - reduction
            print("The answer is :", minuend, "-", reduction, "=", answerofsubtract)